public class Test {
    final public int SIZE = 10;
}
class Base{
    protected int a = 10;
    public int b;
}

class A extends Base{
  /*  A a = new A();
    public static void main(String[] args) {
        Base base = new Base();
        System.out.println(base.a);

        A a = new A();
        System.out.println(a.a);
    }*/
}

class B extends Base{
    public static void main(String[] args) {
        A a = new A();
        System.out.println(a.a);
    }
}
